Lubricating apparatus



June 24, 1919. A. v. GULLBORG LUBRICATING APPARATUS Filed Feb. 11, 1918 V z/ZPWU GaZZboig ARTHUR v. cortisone, or emcee-0, rumors.

OFFICE.

LUBRICA'IING APPARATUS.-

Specification ofLetters Patent. Pate t d June 24, 1919,

Applioatioifflled February 11, ms. Serial No. 216,586.

T 0 all whom it may concern:

Be it known that I, ARTHUR V. GULLBoRo, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certainnew and useful Improvement in Lubricating Apparatus, of which the following is a full, clear, concise, and exact description, reference being had to the accompan ing drawings, forming a part of this speci cation.

This invention relates to lubricating apparatus and is particularly concerned with the provision of means for supplying lubricating grease to bearings which are more or less inaccessible. One object of my invention is to provide meansof the character de-.

scribed comprising a novel grease pump which coiiperates with a grease cup of novel construction to entirely fill the grease cup without wasting any of the lubricating grease. Another object of my invention is ump having a flexible to provide a still further object of grease discharge con uit.

- my invention is to provide a grease pump having a flexible discharge conduit provided with means for interchangeably locking either end thereof to said grease pump or to the grease cups which are being filled by the use of either one or the other of these coupllngs it is possible to obtain access to grease cupsin comparatively inaccessible places, Other objects, adaptabilities, and capabilities will appear as the description progresses, reference being had to the accompanying drawings, in which- Figure 1 illustrates my improved grease pump supplying grease to one of my novel grease cups, the grease pump being shown partially in longitudinal section. In this view my improved grease cups aIBShOWD.

appjlied to a steering knuckle of an auto-j mo ile;

Fig. 2 is a longitudinal section through p cup which would not otherwise bQ'fiCCGSSlbleL my improved grease cup; and

Fig. 3 is a ,longltudinal sectio thf one of the coupling members.

Referring'to the drawings, the reference character 5 indicates the barrel of my im-. proved grease pump, one end of whl h is closed by a head 6, whichmay be soldered or otherwlse secured to the end of the barrel. The opposite end of the barrel is closed by 2 the head 8, which has an internally threaded flange 9 for receivin the externalthreads 10 on the end of the barrel. .The head 6 is provided with a central boss 11, which is provided with a screwthreaded bore for receiving the screwthreaded piston rod 12. The rod 12 is provided with a handle 13' for rotating the same. The inner end of the rod 12 has a piston mounted thereon which comprises the-spaced disks 14 and 15 between which is confined the cup leather 16, thetwo ich the j The head 8 is rovided with a centrarl boss.

19 having a re uced ortion 20, shown in dotted lines in Fig. 1, orming a shoulder 21,

and a discharge opening 22 formed there.-- 7

through. A pin 23 extends through the reduced portion 20 and fro-m both sides thereof. The discharge con-duit 24 is formed-"- from a piece of flexible .duct, preferably, comprising an outer spiral metallic r1b 25. There are numerous flexible ducts in coinmercial use which may be employed for this part of my invention, and further descri tion thereof appears to be unnecessary. t

one end of the duct 24 I provide arrL-shaped coupling 26 having bayonet slots 27, one of which is not shown, which co-act with the opposite ends of the pin 23 to secure the cou- 'Fror'lgx the above descriptionit will be clear t at either coupling member can be connected with either the pump orvwith the grease cup. By using the L-shaped coupling for connecting with the grease cup it is sometimespossible to gain access to a grease My novel grease cu'p comprises a tubular member 31' having the screwthreads-32'at one end thereof for securing them to a bearing, andthe other end thereof being flanged inwardly-as shown at 33, for the purpose. off

"providing a; for the ball closure-a4."

his closure is urged against its seat ."meansofta compression spring 35, which s confined betweenlthe pin 30 and the closure 34. The central portion of my v hexa onal' in cross.section, as indlcated at 36,112 ereby providing means for receiving 7 m the jaws of a .wrench'to screw the cup into place;

. V cates a gasket made offelt or "other suitable material for sealingthe connection between the coupling and the ,grease cup.

From thisconstruction it will be seen that when the coupling member is secured to the grease cup by means of the bayonet connection, there will'be nochance for'the'grease to escape between tlfe'si'etwo members when the piston rod 12 isrotated to 'force the plston inwardly, and thereb force the V grease into the grease cup. T is, is an im- .proved feature of my mvention, for the reason that in prior grease pumps with which I am acquainted, no means has been provided for locking the dischargeend of .the nozzle to the grease cup, and consegllllently, if more grease than is necessary to there is no chance for grease being wasted v this manner. Furthermore, it is posslble completely-to fill the grease cup. with-v grease, which is a result impossible of being" obtained with the oldtype of grease pumps for {the reason that by "the use of these pumps more or 'less air always became en trapped in the grease.- a,

Another advantage of my construction lies inthe fact that after her of with the grease cup,- ated without paying ,anyxattention to the location of the grease cup.

Whil have disclosed thepreferred "em' bodiment-of my invention, it is to be under-;. stood that it is not'limited to the details of;- the structure described, but is capable ofother adaptations and modificationsfwithin 1 the scope of the} appended claims, some of.

which are broad enough to include constructions in which the grease cups are entirely dispensed with and means are provided-for detachably connecting the grease pump jwith v fmembers havingapertures formed therein i for conveying tothejpartsto be lubricated.

Having thus" my I ease cup is In' rig. a the refereiizecharacter'37 indithe grease cup is forced through the, nozzle, the excess quantity of grease merely overflows the edge of the greasecupand is= wasted. With my improved'construction thecoupling mem-' y g a pump has been connected, e pump can be operatoneend1tn p v V H her at {theuother end, sald xeouplmgsfand conduit provided at one tndwvith it straight and atthe 'otherend with an,

couplin L-shape coupling,'- of, a grease cup and means on said grease pump. and greasecup for co-acting with said couplings to inferchangeably connect either end of said oon-' duit with said pump and cup respectively.

3.; A grease cup comprising a tubular member havin sorewthreads at one end and I his stats -aeile fesiuib w havin the ot er end flanged inwardly to L provi e a closure seat, a closure, a-p1nextending through said tubular member. and on both sides thereof, and a spring confined between said pin and closure and tending to hold said closure .on. said seatliif 1 i;

4. A grease cup comprising-{a tubular member having one end flanged to provide a closure seat, a a pin extending through saidtubular member and on both sides thereof, anda between said pin and closure and-tending to hold said closure on said 5. A grease *oupcomprising a tubular member having one "end-flanged inwardly to tending wall of said tubular member,';"and a confined .between the inner endtof sai pin provide a closure seatia 'closure, a pin exinwardly and 'outwardlyiyfrom one" andsaid closure to hold-saidfclosureion its opening in com ination' aconduit-havin a straight" coupling an. L-sh'a'ped? coupling pump being provided withoo-aoting for connecting either of" said pump.. a 2" In witness .Whereo mom- 7 p I I V fi I subscribe it my name thislst da'y 1 918.; 

